tengo dos tarjetas de red PCI Realtek mas la onboard Intel, la idea es
hacer que esta PC funcione como router entre tres niveles de red que
tengo y conectar este servidor a las tres redes.

El problema es que cuando conecto las tres tarjetas siempre una no me
funciona. Y el funcionamiento se alterna entre las PCI.
 
Configure la red de esta manera:

eth0 al router de WAN
eth1 al switch 1
eth2 al switch 2

# lspci | grep Ethernet
01:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
01:01.8 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
01:08.0 Ethernet controller: Intel Corporation 82801DB PRO/100 VE (LOM)
Ethernet Controller (rev 81)

# ifconfig
 eth0    Link encap:Ethernet  HWaddr 00:11:11:04:25:55  
          inet addr:x.x.x.x  Bcast:x.x.x.255  Mask:255.255.255.0
          inet6 addr: fe80::211:11ff:fe04:2555/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:31573 errors:0 dropped:0 overruns:0 frame:0
          TX packets:31171 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:26399587 (25.1 MB)  TX bytes:5941465 (5.6 MB)


eth1      Link encap:Ethernet  HWaddr 00:40:f4:33:f2:96  
          inet addr:2.15.1.10  Bcast:2.15.1.255  Mask:255.255.255.0
          inet6 addr: 20fe::240:f4ff:34fe:f296/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:28690 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40949 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5888169 (5.6 MB)  TX bytes:40458170 (38.5 MB)
          Interrupt:21 Base address:0xd800 

eth2      Link encap:Ethernet  HWaddr 00:40:f4:33:f2:96  
          inet addr:2.15.2.10  Bcast:2.15.2.255  Mask:255.255.255.0
          inet6 addr: fe80::240:f4ff:fe33:f296/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:28690 errors:0 dropped:0 overruns:0 frame:0
          TX packets:40949 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5888169 (5.6 MB)  TX bytes:40458170 (38.5 MB)
          Interrupt:21 Base address:0xd800 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4369 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4369 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:535080 (522.5 KB)  TX bytes:535080 (522.5 KB)


Alguna sugerencia??

-- 
Michel Perez                                  )\._.,--....,'``.    
Ulrico Software Group                        /,   _.. \   _\  ;`._ ,.
Nihil est tam arduo et difficile human      `._.-(,_..'--(,_..'`-.;.'
mens vincat.                    Séneca.   ============================= 


---------------------------------------
    Red Telematica de Salud - Cuba
          CNICM - Infomed
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